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List all the forces that act on a hot air ballon when it is in the sky
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List all the forces that act on a hot air ballon when it is in the sky

User Baldr
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2 Answers

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gravity, acceleration, kinetic energy, the atmosphere
User Petrzjunior
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Down ... gravity
Up ....... buoyancy

When these are equal, then the balloon either stays at the same altitude,
or moves up or down at a constant rate.

Horizontal ... wind

When wind is not zero, the balloon accelerates in the direction of the wind.
User Tuhin
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